Question

What is the best way to determine whether a given point is a solution to a system of equations?




a.

substitute the x and y coordinates into one equation and check to see if they work

c.

substitute the x and y coordinates into both equations and check to see if they work


b.

graph the equations and see if the point lies on both lines

d.

solve the system of equations and compare the answer to the given point

Answer 1

the best way to determine if its a solution is if the point is at where the 2 lines intersect

Answer 2

Which would you do if actually faced with this need to check a solution?

Answer 3

Yes, indeed. The "solution" is the point of intersection of those two lines.